Improvement in gas-ivlach



!mwa 3:01&

2 Sheets--SheetL Patented Feb. 18,1873.

Gas-Machines;

T. B. FO GARTY.

'AM PHOTO-LITIOGRAPIIC ca. um'osaanvs PRocs -s) AA///// ////////////////w/////// ///////V//////L/////////z and carry along with it a large body of air.

`of this part of my invention being to render tion, of the automatic drip to which the second THOMAS B. FOGARTY, OF l l/'ARBEN', MASSACHUSETTS.

lMPROVEMENT IN GAS-MACHiNES.

Specfieation forming part of Letters Patent No. 135380, dated February 18, 1873.

To all whom 'it may co'ncern:

Be it known that I, THOMAS B. FOGARTY, of Warren, in the county of W'orcester and State of Massachusetts, haveinvented certain Improvements in Gas-Machines, of which the following is a specitication:

My invention relates principally to antomatic gas-machines in which the manufacture and supply of gas are automatically regulated by the rising and falling 'of a gas-holder sealed in a vessel of water or other suitable liquid, or its equivalent, a flexible diaphragm but it refers more particularly to 'machines of the above class, in which a proper and equable admixture of air and vapor or gas is efi'ected by vaporizin g h ydrocarbon liquid under pressure, either hydrostatic or pneunatic, in a suitable retort, and causing the vapor so formed to be blown with a high velocity through asmall j et across an intervening body of air and into the mouth of the larger pipe, so as to induce i The first part of my in'vention relates to a new and improved air-valve, and to supply ing the air thereto through a pipe leading to the outside of the gas-house; the 'object of this part of my invention being to make a tighter and more perfect air-valve, and to prevent danger of fire from any accident to or disarrangement of the same.

The second part of my invention relatcs to a new and improved application of the automatic drip N, already described in my patent of September 26, 1871, No.119,22.7; the object the said drip more definite and positive in its action. i

Figure 1 is a View, partly section and partly elevation, of the gas-house and gas-machine. Fig.2 is a section of my .improved air-Valve. Fig; 3 isa View, partly section and partly elevapart of my invention relates.

Upon both sheets of drawing and in all the figures the same letters refer'to the same parts; and where reference is made to the drawings of other patents the parts referred to are particularized by the same letters as upon the drawings themselves, and the letters of reference upon these drawings and upon those attached to the present specification are, as far as possible, made to correspond.

structed so that it and its stemare made in i one piece, or are united, so that practically they are one. The effect of this Construction is, that if the valve-stem should by any chance be bent or thrown out of a line perpendicular to the yalve-seat, the Valve itself, being rigidly connected to the sten, would be prevented from seating itself by the bent shape or deviation from the perpendicular of its stem, and there would necessarily be an escape of gas. It is to remedy this defect thatl have devised the valve shown at` A, Figs. 1 and 2 of the drawing accompanying this specification.

On reference to the above figures it will be seen that this valve A is completely separate and distinct from its sten, and rests squarely upon its seat without any reference to the position of the stem, which passes loosely through its faceinto an enlarged and elongated opening within it. Now, as soon as the stemBis thrown upward by the action of an actuating-lever, as described and shown in my before-mentioned patent No. 115,593, it strikes against the upper side of the elongated opening iri-.which it rests, and lifting the valve raises it until it (the stem) is caught and held in its' position by a wire, described in my patent of June 6, 1871, No.115,597, and designated upon the drawings attached to said patent by the letter J.

The sten B, being thus held in position, supports the valve until the wire J, before referred to, releases it, in the .manner described in the specification of my patent No. 115,597, before referred to; when the support of the stern is suddenly withdrawn from under A, either by its own weight or by the action of a lever, as shown in my patent No. 115,593, when, in consequenee ot' its support being withdrawn, the valve A falls to its seat, to which it is left free to aceommodate itself by its loose fit upon its stem, as well as the enlarged shapc of the elongated opening within it which receives the stern.

is actuated, the essential di'erence between' the valve described in my former patent No.

115,593 and this being, that in the former the valve was held rigidly to its stem, and thereby was frequently prevented from adjusting itself to its seat, while the valveA described in my present specification is entirely disconnected from its stem, and is at liberty to adjust itself perfeetly toits seat independentl y ot' the stern.

In using automatically-operatin g air-gas mai chines circumstances may arise under which the valve A will necessarily remain open and allow gas to escape into the gas-house, and when this o'ccurs the Volume of escaping vapor is certain to take fire from the burner under the retort.

To remedy this defect, and thereby remove all danger from this source, I have devised the air-register C and air-pipe D, as shown in the drawing attached to this specification.

The air-pipe D, extending from the valve A to the outside of the gas-house, explains itself, for it evidently cuts off all communication between this valve and the interior of the gashouse, and removes all danger of vapor escapin g from this valve taking fire from the burner under the retort, as this pipe will be certain to remove it out of the building and out ot' reach ot' the fire.

I claim that the combination of the pipe D, aii-register C, and valve A is new and has not been heretofore applied to automatically-operating air-gas machines; but I do not confine myself to the application of a simple pipe for this purpose, for it is evident that any other chanber or passage-way cutting off communication between the interior of the gas-house and the valve A, and at the same time forming a communication between this valve and the outside of the gas-house, will answer the same purpose.

In order to regulate the quantity of air drawn into the machine through A, and at the same time leave no permeable communication between it and the nterior of the gashouse, I have devised the air-register C, Fig. 2. It will be seen that this register is furnished with an external ring, fitting upon the cap F and communicating with the air-register O within the cap by means of the pin G working horizontally through a slot in the side of F, thus affording a means of Operating the air-register without removing or otherwise interfering with the pipe D, or in any other nanner making an ontlet through which vapor might escape into the gas-house. The contiguous parts of this ring and of F may be marked, one with a scale and the other with an index-mark of any sort, so that the extent to which the register, whichis eoneealed from view within F, is open may be ascertained by the position of the index relatively to 'the scale.

I do not claim that there is any novelty in a register by which the quantity of air induced and the consequent quality of the gas may be regulated; but I do claim as new the combination ot an internal register with an external ring, as set forth.

In the specification of my patent of September 26, 1871, No. 119,227, I described and claimed a device for closin g the vapor-valves of automatically-working gas-machines whenever liquid escapes through said vapor-valves instead of vapor. In said patent I described a means of etfecting this by means of a lever, M, operated by a drip, N, whenever the weight of the liquid in N would be sufficient to overcome the resistanee of the weight C', so as to cause N to fall, and in falling act upon M, and through it close the vapor-valve. (See drawing, No. 119,227.)

The second part of ny invention consists of a device for an improved application ot' the drip N. This application will be readily understood by reference to Figs. 1 and 3 ot' the drawing attached to this specification.

In Fig. 1 is shown the drip N supported by the lever O and balanced by the weight C', as before described in ny patent Ne. 119327; but instead of causing it to act upon and operate the lever M, as described in said patent, I cause it to act directly upon a cock or valve, K, in the gasoline-supply pi pe L, so as to close this cock by means of the arm R pressing upon the lever P, (see drawing attached to this specification,) so as to close the cock and cut of the supply of gasol'ine whenever the weight of liquid in N makes it sufficiently heavy to overcome the resistance of C' and release itself. i

I do not claim the drip N or the weight 0 as new, for both these have been described in my patent No. 1l9,227 but I do claim as new the combination of these devices with a valve, K, as set forth.

I claim- 1. The air-injector or back-pressure valve A of carbureters or gas-machines, constructed and operated substantially as set forth.

2. The air-register C of carbureters or gasmachines, constructed and operated substantially as set forth. i

3. An air-pipe, D, communicating between the outside of the gas-house and the air-in- 'ector or back-pressure valve ot' a portable gas-machine, substantially as set forth.

4. The combination of a drip, N, cock K, and lever P, constructed and operated substantially as described.

THOS. B. FOGARTY.

witnesses:

W. H. FAIRBANK, B. A. TRIPP. 

